Error in ww3_multi

[zhemu26]

Dear WW3
I use ww3_multi to run WW3, but there is an error which says the numbers of tag are too large.So i thought the reason maybe too much grids, but in another case , the number of grids is more running without error.
Error information is as show below

Thank you for your help!

[mickaelaccensi]

Dear zhemu26,

I had the same issue on some WW3 configurations on our HPC.
You can try this branch which solves this issue : https://github.com/umr-lops/WW3/tree/bugfix_mtag2

otherwise, a workaround would be to set the following mpi environment variables :
export MPIR_CVAR_CH4_OFI_TAG_BITS=29
export MPIR_CVAR_CH4_OFI_RANK_BITS=10

Actually your issues is adressed in issue #711

Let me know if it works for you also.

Best,

Mickael